Tomcat may refer to:

• A male cat, known as a tom or tomcat
• F-14 Tomcat, a military jet fighter in service with the United States Navy from 1974 to 2006.
• Apache Tomcat, a web container that functions as a web server supporting servlets and JSPs
• Tomcats (movie), a 2001 comedy film
• The Beretta Tomcat, a small .32 caliber pistol
• TomKat, a portmanteau for celebrity couple Tom Cruise & Katie Holmes
• VMO-6 - an inactive USMC observation squadron nicknamed the Tomcats

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